One thing that has allways disturbed my mind is the correct understanding of lightinteractions in nature. When we're talking about light reflection (light that is reflected in an arbitrary direction, not like mirrors) is it really reflections or is it new light created by the incoming light that stimulates the material. One other example of this are the flourocerent colors which means that the dissipating wavelength is different that the incoming ones. In this case it must be that the light isn't really reflected but created (and sent out in an arbitrary direction) in the material when light is lit on it. Can anyone please give me a good physically correct answer for this. Another thing is the confusion with "black bodies". According to physics the black body should absorb all wavelengths but it should also dissipate all wavelengths. Then how can the body be black? Confusing contradiction.